Pile wire



W. PICKARD Nov. 26, 1929 PILE WIRE Filed Sept. 10, 192"! ATTORN EY Patented Nov. 26, 1929 UNITED STATES PATENT OFFICE FILE WIRE Application filed September 10, 1927.

The present invention relates to pile wires used in connection with looms, particularly those for making carpet products and the like.

It is well known that in removing the pile wires and reinserting them that the heads detach, and due to such contingency, the bank of pile wires jams, sometimes damaging the machine. Generally when the heads discon nect from the pile wires the carpet or similar product is greatly damaged, ery often beyond repair.

Heretofore the heads were attached to the pile wires by rivets, together with solder, or

by means of an extra plate, or by swaging over the edge of the side walls. of the slot which receives the pile wire in the head. Numerous means have been employed for connecting the pile wires to the heads, but all such fastenings as have been heretofore used do not constitute permanent connections be tween the head and the pile wire.

Therefore, it is the purpose of the present invention to provide a very substantial and 2 5 durable connection between the head and the pile wire, such as will permit the head to remain permanently and durably attached to the pile wire, the particular aim being to form the attaching means at the same time the head is attached to the pile wire, using very high pressure to accomplish this result.

Another purpose is to provide a head having the usual groove or recess for the end of the pile wire, the opposite walls of the recess being chambered or recessed out in semi-cire cular form, such semi-circular recesses adjoining openings through the bottom of the pile wire receiving recess, so that when the end of the pile wire is placed in the recess,

40 and a piece of metal placed across the wire and in a position adjoining the semi-circular recesses and the openings through the bottom of the pile wire receiving recess, high pressure from a heavy hammer of a gravity type may be employed for swaging the metal into the semi-circular recess and the openings, the OP? posite edges of the end of the pile wire being also recessed in semi-cireular form, so that the bar of metal may be formed into a bridg- 5.0 ing rivet or in the form of a staple fasten- Serial No. 218,666.

ing, and since the lower portions of the semi circular recesses have divergent walls, the legs of the staple or bridging rivet are riveted in the openings and the semicircular recesses to insure a permanent fastening, one such as will prevent detachment of the head.

The fact is the real invention here involved is to create a permanent fastening at the same time it is applied.

It is to be understood that the particulars herein given are in no way limitative, and that while still keeping within the scope of the invention, any desired modification of details and proportions may be made in the construction of the device according to circumstances.

The invention comprises further features and combination of parts to be hereinafter et forth, shown in the drawings and claimed.

In the drawings Figure lis a view in perspective of the improved pile wire and its head attached thereto, adapted for use in connection with looms.

Figure 2is a longitudinal sectional View on line 22 of Figure 1.

Figure 3is a cross-sectional View on line 3-3 of Figure 1.

Figure 4is adetailed perspective View of the attaching end of the pile wire.

Figure 5is a detailed perspective view of the head for the pile wire.

Figure 6is a detailed perspective view of a pile Wire head showing a modified form of groove or recess 5.

Figure 7-is a view of a modifiedform where the pile wire is secured in a recess by disposing and securing to the top surface of the head a stapling construction similar to that in Figure 1.

Figure 8is a sectional View of the form I in Figure 7 but showing the pile wire head secured by the stapling construction in Fig ure 7.

Referring to the drawings,-1 identifies a pile wire for a loom, and which may be of i The end of the pile wire to be attached to the head 3 (wh'ch is of approved construction) has its opposite edges adjacent its attachin end, provided with semi-circular recesses -l. Such end of the pile wire engages in an elongated groove or recess 5 of the head. gages the groove 5 is substantially thinner than the depth of the groove, in a manner as identified at 6 in Figure 1.

The opposite longitudinal walls of the groove or recess 5 are provided with semicircular recesses 7, which merge into the openings 8 formed through the bottom of the groove.

In attaching the end of the pile wire, it is placed in the groove 5, and a short bar or piece 9 of compressible metal is placed in a position transversely of the pile wire and in a position adj oining the recesses 7 and the openings 8. It will be noted that the lower portions of the walls of the openings 8 diverge, as indicated at 9" in Figure By subjecting this short bar of compressible or pliable metal to a very high pressure, from a gravity or pneumatic hammer or by any other suitable means, the metal of the bar may be swaged into the semi-circular recesses and the openings 8, to entirely fill such parts, the main part of the bar of metal as at 10 bridging across the upper surface of the pile wire, and thereby forming a bridging rivet or straddling staple, the legs of the staple or rivet filling the diverging portions of the openings 8, and hence preventing pulling or otherwise removing the staple. The fact is the transverse part of the straddling staple or riveted staple acts to bridge transversely across the pile wire, and thereby provide a very substai'itial and permanent fastening between the end'o-f the pile wire and the head. The transverse part of the riveted or straddling staple spreads or swages laterally, and subsequently to so fasten the end of the pile wire. Parts of the groove 5 may contain a reasonable amount of solder, as well as the lower ends of the legs of the riveted staple, as may be identified at 11, it being obvious by this construction and arrangement that an additional means is afforded for insuring a permanent connection between the head and the end of the pile wire. There are two fastenings of this character, and practical experience and tests have resulted in showing that the head remains permanently and at all times connected to the end of the pile wire, thereby avoiding any jamming of the pile wires, and hence preventing damage to the carpet or other product being made on the loom.

In Figure 6 the depression 5 is constructed without the side walls of the depression or recess 5 being under cut or dove tailed. Referring to Figures 7 and 8 it will be noted lrlowever, the pile wire where it en- 7 that the head is not recessed, but the pile wire 1 is disposed and secured on the top surface of the head and a stapling construction 9 is forced through the recesses 49 and the openings 7 and swaged or riveted at 8 by extremely heavy hammer blows.

The invention having been set forth, what is claimed is:

1. As an article of manufacture, a pile wire for looms, consisting of a pile wire end and a pile wire head, the latter having a longitudinally extending elongated groove with its side walls recessed, the bottom of the groove having openings registering with said recesses, the groove to receive the end of the wire, and means swaged into the recesses and the openings and transversely formed across the face of the wire, thereby insuring a perma-nent fastening.

2. As an article of manufacture, a pile wire for looms, comprising a pile wire end and a head provided with a longitudinal groove to receive the pile wire end, the groove being deeper than the pile wire end and having its side walls provided with opposed recesses, the opposite edges of the pile wire end having recesses, and the bottom of the groove having openings registering with the recesses, and means swaged into and in conformity with the recesses and the openings, the walls of the openings at their bottoms diverging to prevent detachment of the swaged means, said swaged means bridging across the pile wire and'insuring a permanent fastening.

3. As an article of manufacture, a' pile wire for looms having one end provided with opposed recesses, a head having a longitudinal groove to receive the recessed end of the pile wire, the opposite walls of the groove having recesses, and the bottom of the groove having openings registering with both sets of recesses, and a staple bridging across the end of the pile wire with its legs swaged into the recesses and openings, the lower walls of the openings being divergent whereby the ends of the legs may be swaged into conformity therewith.

4. The combination with a pile wire for looms having its opposite edges recessed, of a head with a groove in its face to receive the recessed end of the pile wire, the opposite walls of the groove having recesses in register with the first recesses, the bottom of the groove having openings adjoining the registering recesses, and means made to conform to and look within the recesses and the openings and bridge across the end of the pile wire.

5. The combination with a pile wire for looms having its opposite edges recessed, of a head with a groove in its face to receive the recessed end of the pile wire, the opposite walls of the groove having recesses in register with the first reccesses, the bottom of the groove having openings adjoining the registering recesses, and means made to conform to and lock Within the recesses and the openings and bridge across the end of the pile Wire, and metal deposits to further secure said means and additionally insure a permanent fastening.

6. A method for attaching a head to the end of a pile Wire for looms, consisting in forming a riveted staple at the time of attaching the head to the end of the pile Wire, and sWaging the staple to conform it to registering recesses in the pile Wire and the head and to openings in the bottom of the head.

7. A method for fastening a head to the end of a pile Wire for looms, consisting in recessing the opposite Walls of a groove in the head and recessing the opposite edges of the end of the pile Wire and forming openings in the bottom of the groove of the head, and sWaging a piece of compressible metal across the end of the pile Wire in bridging position and shaping it to the recesses and the openmgs.

8. A pile Wire for looms, comprising a head with one of its'faces grooved longitudinally for the reception of one end of the Wire, the opposite edges of the Wire and the Walls of the groove having registering cavities, and relatively soft swagable means to bridge across the Wire and made to sink into and conform to the cavities of the Wire and the head and thereby lock the Wire to the head.

9. A method for attaching a head to one end of a pile Wire for looms, consisting in bridging one end of the Wire With a soft swagable element, sWaging the element across and substantially flush With the surface of the head and the pile Wire, causing the element to pass through the head, and causing the element to fill up into and locking in cavities of the pile Wire and the head.

In testimony whereof he affixes his signature hereto.

WILLIAM PICKARD. 

